The 9001SK push button line has a large variety of operators and accessories for heavy industry applications. These operators are used in the petrochemical, metallurgy, mining, oil and gas, wastewater treatment and automotive manufacturing industries and more. Type SK operators have a plastic operator that mounts in a 1.18 inch round hole. This push-to-test pilot light has a plastic ring nut. By pushing on the pilot light lens, you can determine if the pilot light lamp is still working. This push-to-test pilot light has a 24-28 VAC/VDC full voltage light module with an incandencent lamp to provide the illumination. This operator has one 9001KA1 contact block mounted on the back. The contact block has one normally open and one normally closed contact. Contact block has a UL Type A600, UL Type Q600 and a 10A resistive VAC rating. The contacts in this contact block are double break direct acting. Contact block and light module will accept up to two 12AWG to 24 AWG solid or stranded wires. The contact block and light module terminals are protected to meeting VDE 0106 Part 100. This push-to-test pilot light has an red plastic fresnel pilot light lens When properly installed this opertor is UL listed for Types 1, 2, 3, 3R, 4, 4X, 6, 12 and 13 environments. This operator is UL Listed and CSA certified.